1-Naphthol vs CI 45380 (RED 21)
1-Naphthol and CI 45380 (RED 21) are both added colour ingredients. 1-Naphthol is found in 1 product while CI 45380 (RED 21) appears in 1, making 1-Naphthol the more widely used option.
Added colour
1-Naphthol
Added colour
1 products
Added colour
CI 45380 (RED 21)
Colour pigment
1 products
Top products with 1-Naphthol
Top products with CI 45380 (RED 21)
Frequently asked questions
What is the difference between 1-Naphthol and CI 45380 (RED 21)?
1-Naphthol is categorised as "Added colour" while CI 45380 (RED 21) is categorised as "Added colour". They serve different functions in skincare formulations.
Can I use 1-Naphthol and CI 45380 (RED 21) together?
In most cases, these ingredients can be used together. However, always patch test and introduce new ingredients gradually.
Which is more common in skincare products?
1-Naphthol is found in 1 products, while CI 45380 (RED 21) is found in 1 products in our database.